Magnetism and Electromagnetism If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage reverses polarity remains unchanged increases decreases reverses polarity remains unchanged increases decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a ferromagnetic material? Tungsten Nickel Aluminium Copper Tungsten Nickel Aluminium Copper ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a vector quantity? Magnetic field intensity Flux density Relalative permeability Magnetic potential Magnetic field intensity Flux density Relalative permeability Magnetic potential ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of a magnetic field within a magnet is front to back from north to south back to front from south to north front to back from north to south back to front from south to north ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. Soft iron Hardened steel None of the listed here Stainless steel Soft iron Hardened steel None of the listed here Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Materials subjected to rapid reversal of magnetism should have High co-ercivity and low density High permeability and low hysteresis loss High co-ercivity and high retentivity Large area of B-H loop High co-ercivity and low density High permeability and low hysteresis loss High co-ercivity and high retentivity Large area of B-H loop ANSWER DOWNLOAD EXAMIANS APP
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